Cleanup: constify get_units()

get_units() returns a pointer to the units struct in the preferences.
Callers should not modify the preferences via this struct, therefore
make the return value point to const.

This is a small step in constifying the global preferences structure.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

1 files changed, 1 insertions, 1 deletions

diff --git a/core/subsurfacestartup.c b/core/subsurfacestartup.c
index f234ac86f..f3f9e4bda 100644
--- a/core/subsurfacestartup.c
+++ b/core/subsurfacestartup.c
@@ -106,7 +106,7 @@ struct preferences default_prefs = {
 
 int run_survey;
 
-struct units *get_units()
+const struct units *get_units()
 {
 	return &prefs.units;
 }